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United States Patent | 5,726,524 |
Debe | March 10, 1998 |
An electric field emission device includes an electrode that includes a layer having a dense array of discrete, solid microstructures disposed on at least a portion of one or more surfaces of a substrate, the microstructures having an areal number density of greater than 10.sup.7 /cm.sup.2, the microstructures being individually conformally overcoated with one or more layers of an electron emitting material, the overcoated electron emitting material being disposed on at least a portion of the microstructures and have a surface morphology which is nanoscopically rough. A method for preparing the electrode used in the invention is discussed.
Inventors: | Debe; Mark K. (Stillwater, MN) |
Assignee: | Minnesota Mining and Manufacturing Company (St. Paul, MN) |
Appl. No.: | 656573 |
Filed: | May 31, 1996 |
Current U.S. Class: | 313/309; 204/192.1; 204/192.38; 313/310; 313/336; 313/346R; 313/351; 313/495; 427/249.7; 427/250; 427/255.38; 427/255.6; 427/508; 427/521; 427/577; 427/578; 427/579 |
Intern'l Class: | H01J 001/30; C23C 016/00 |
Field of Search: | 313/309,336,351,346 R,495,310 427/58,255.6,255.7,384,376.1,508,521,577,578,579,249,250,255,255.1 204/298.02,298.04,192.38,180.6,192.1 |
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